HealthSmart - Ortho Bed Wedge for Legs and Feet is a unique foam wedge that eases back pain and helps improve circulation while allowing the spinal cord to relax. This bed wedge is ideal for leg or foot elevation. It comes with a zippered, machine washable, blue cover made of polyester and cotton. These bed wedges are made of high-quality foam and help relieve pain quickly and efficiently. Only used for 2 weeks for leg recovery, worked great